diff --git a/main.pdf b/main.pdf index eee7698..54270bf 100644 Binary files a/main.pdf and b/main.pdf differ diff --git a/main.tex b/main.tex index d184889..3ebdfd2 100644 --- a/main.tex +++ b/main.tex @@ -90,7 +90,7 @@ code-for-last-col = \color{blue} \begin{frame}[fragile]{Homogeneous Spherical Spaces} \begin{itemize} \pause - \item Finite subgroup $\Gamma \leq \so 4.$ + \item Finite subgroup $\Gamma \leqslant \so 4.$ \pause \item The Helmholtz equation on $\textcolor{blue}{M}$ has the spectrum of the underlying manifold as its solutions, and is given by \begin{align*} @@ -168,18 +168,18 @@ code-for-last-col = \color{blue} \pause \item The CMB temperature fluctuations can be expanded as: \[ - \Delta T(\hat{n}) = \sum_{\ell=0}^{\infty} \sum_{m=-\ell}^{\ell} \textcolor{blue}{a_{\ell m}} Y_{\ell m}(\hat{n}) + \Delta T(\hat{n}) = \sum_{\ell=0}^{\infty} \sum_{m=-\ell}^{\ell} \textcolor{blue}{a_{\ell m}} Y_{\ell m}(\hat{n}). \] \pause - \item If the universe is \textcolor{red}{isotropic}, the \textbf{mean of the harmonic coefficients} should satisfy: + \item If the universe is \textcolor{red}{isotropic}, the \textbf{mean of the harmonic coefficients} should satisfy \[ - \langle \textcolor{blue}{a_{\ell m}} \rangle = 0 + \langle \textcolor{blue}{a_{\ell m}} \rangle = 0. \] \end{itemize} \pause \textbf{Key Question:} - - Does the observed CMB data deviate from statistical isotropy? - - If \( \langle \textcolor{blue}{a_{\ell m}} \rangle \neq 0 \), this suggests a preferred cosmic direction. + Does the observed CMB data deviate from statistical isotropy? + If \( \langle \textcolor{blue}{a_{\ell m}} \rangle \neq 0 \), this suggests a preferred cosmic direction. \end{frame} \begin{frame}{Methodology: Sky Masking and the Test Statistic} @@ -192,7 +192,7 @@ code-for-last-col = \color{blue} \pause \item The test statistic \( S_i \) is used, with a matrix $W$ to correct for these effects: \[ - S_i = \sum_{j} W_{ij} M_j + S_i = \sum_{j} W_{ij} M_j. \] \end{itemize} \pause @@ -201,7 +201,7 @@ code-for-last-col = \color{blue} \item We generate thousands of \textbf{simulated CMB skies} assuming isotropy. \item Each sky has different random \( a_{\ell m} \), drawn from: \[ - \textcolor{blue}{a_{\ell m}} \sim \mathcal{N} (0, C_\ell) + \textcolor{blue}{a_{\ell m}} \sim \mathcal{N} (0, C_\ell). \] \item The observed WMAP data is compared against these simulations. \end{itemize}